Nov. 10 (UPI) -- Several thousand flights were again canceled or delayed Monday as the Federal Aviation Administration cut down on service because of air traffic controller shortages amid the longest federal government shutdown.

Staff members who show up for work are not being paid, which has led to fatigue despite the need to be alert, Transportation Secretary Duffy said. Some are tired because they are working second jobs to bring in money as the shutdown entered its 41st day.

Since Friday, the FAA has ordered a 4% reduction in flights at 40 major airports, which has caused a ripple effect at smaller locations.

There were 2,747 cancellations and 8,337 delays involving U.S. Airports through 8 p.m. Monday, according to FlightAware.

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